County profile · Iowa
Plymouth County, IA market data
How Plymouth County compares with other counties for 56 business types: competitors, household spending, official counts and growth.
- Population, 2025
- 25,697
- 0.0% since 2020
- Households
- 10,313
- Median household income
- $83,251
- +23.7% vs. 2015–2019, before inflation
- Median home value
- $228,900
- Jobs located here
- 12,334
- Highest market score
- 75
- Dentists and orthodontists, #141 of 1,886 scored counties
A site report maps the competitors on map listings around any address in Plymouth County by name and distance, and the households and spending within reach. Or open the report at the center of Plymouth County. Signed out, you see a blurred preview; on an account, each report is one action.
Free10 actions over 3 days, no cardSurvey estimates 2020–2024 · population estimates 2025 · official business counts 2023 · map listings September 2026 · Data credits · How we measure
What this means
Plymouth County has an estimated 25,697 people and 10,313 households. Between 2020 and 2025, the population of Plymouth County held about level, against +3.1% for the U.S. Median household income in Plymouth County is $83,251, 3% above the U.S. median of $80,734. Against the 2015–2019 survey, the median rose 23.7%, before inflation.
Relative to the U.S., household spending in Plymouth County runs highest on vehicle maintenance and repairs (an index of 131, where 100 is the U.S. average) and lowest on child care and other personal services (72).
Of the business types scored in Plymouth County, dentists and orthodontists (75), fast food and sandwich shops (72) and grocery and convenience stores (69) have the highest Groundwork market scores. For dentists and orthodontists, that ranks #141 of 1,886 scored counties.
Plymouth County is part of the Le Mars area. Against the U.S., map listings per household run highest for car washes and detailers (2.8 times the U.S. rate) and lowest for real estate businesses (62% below the U.S. rate).
All 56 business types in Plymouth County
Highest Groundwork market score first. Each score compares Plymouth County with other counties for that business type, from 0 to 100. Spending per listing divides a whole spending line (all vehicle repairs, all eating out) by one type’s listings: the demand for each competitor, not a business’s revenue. Compare it across markets with its index, where 100 is the U.S. figure for the same type; the real estate types, whose line is all housing costs, show the index only. How the score works.
| Business type | Score | Rank among counties | Listings | Per 10k households | Spending per listing | Spending per listing vs. U.S. (100) | Official establishments |
|---|---|---|---|---|---|---|---|
| Dentists and orthodontists | 75 | #141 of 1,886 | 6 | 5.8 | $2.5M | 253 | 6 |
| Fast food and sandwich shops | 72 | #300 of 2,222 | 9 | 8.7 | $4.6M | 150 | 16 |
| Grocery and convenience stores | 69 | #478 of 2,402 | 20 | 19.4 | $3.2M | 94 | 3 |
| Doctors, dentists and clinics | 67 | #445 of 2,394 | 47 | 45.6 | $317K | 208 | 22 |
| Convenience stores | 65 | #583 of 2,261 | 8 | 7.8 | $8M | 101 | Under 3 |
| Real estate | 63 | #447 of 2,229 | 15 | 14.5 | Index only | 227 | 8 |
| Gas stations | 63 | #609 of 2,358 | 8 | 7.8 | $4.1M | 172 | 16 |
| Restaurants and cafes | 62 | #681 of 2,405 | 94 | 91.1 | $439K | 118 | 37 |
| Hair salons | 60 | #695 of 2,339 | 24 | 23.3 | $437K | 102 | 3 |
| Clothing and shoe stores | 59 | #703 of 2,087 | 11 | 10.7 | $1.9M | 148 | 6 |
| Sit-down restaurants | 59 | #779 of 2,405 | 52 | 50.4 | $793K | 120 | 16 |
| Gyms | 57 | #646 of 1,792 | 7 | 6.8 | $1.3M | 103 | 3 |
| Bakeries and dessert shops | 57 | #658 of 1,889 | 9 | 8.7 | $4.6M | 111 | 5 |
| Salons, barbers and spas | 57 | #809 of 2,385 | 44 | 42.7 | $239K | 112 | 5 |
| Clothing, shoes and laundry | 56 | #871 of 2,210 | 18 | 17.5 | $1.1M | 130 | 6 |
| Grocery stores | 55 | #861 of 2,070 | 9 | 8.7 | $7.1M | 76 | 3 |
| Real estate agents and brokers | 54 | #816 of 2,176 | 14 | 13.6 | Index only | 193 | 8 |
| Pizza | 51 | #998 of 2,090 | 12 | 11.6 | $3.4M | 68 | 16 |
| Pet businesses | 51 | #1,037 of 2,200 | 11 | 10.7 | $818K | 93 | 7 |
| Spas and skin care | 48 | #958 of 1,769 | 11 | 10.7 | $955K | 109 | Under 3 |
| Auto repair shops | 48 | #1,277 of 2,378 | 27 | 26.2 | $481K | 108 | 20 |
| Gyms, studios and classes | 46 | #1,250 of 2,088 | 15 | 14.5 | $627K | 95 | 6 |
| Coffee shops and cafes | 45 | #1,221 of 2,063 | 14 | 13.6 | $2.9M | 80 | 5 |
| Home repair trades | 41 | #1,429 of 2,057 | 12 | 11.6 | $2.4M | 98 | 26 |
| Auto repair and car care | 41 | #1,606 of 2,401 | 53 | 51.4 | $245K | 91 | 24 |
| Collision repair and body shops | 39 | #921 of 1,327 | 5 | 4.8 | $2.6M | 84 | 7 |
| Optometrists and eye care | 35 | #999 of 1,302 | 6 | 5.8 | $2.5M | 79 | 5 |
| Martial arts and dance studios | 35 | #1,045 of 1,334 | 7 | 6.8 | $1.3M | 67 | 3 |
| Funeral homes | 32 | #1,176 of 1,472 | 5 | 4.8 | $325K | 48 | 6 |
| Chiropractors | 32 | #1,227 of 1,490 | 9 | 8.7 | $1.7M | 69 | 11 |
| Car washes and detailing | 29 | #1,244 of 1,451 | 11 | 10.7 | $1.2M | 47 | 3 |
| Child care and preschools | 29 | #1,356 of 1,611 | 8 | 7.8 | $536K | 54 | 7 |
| Insurance agencies | 22 | #2,033 of 2,272 | 21 | 20.4 | $943K | 75 | 17 |
| Electricians | Not scored | Not scored | 4 | 3.9 | $7.1M | 59 | 10 |
| HVAC and plumbing | Not scored | Not scored | 4 | 3.9 | $7.1M | 150 | 13 |
| Lawn, cleaning and pest control | Not scored | Not scored | 4 | 3.9 | $3.2M | 193 | 16 |
| Nail salons | Not scored | Not scored | 4 | 3.9 | $2.6M | 157 | Under 3 |
| Physical therapy | Not scored | Not scored | 4 | 3.9 | $3.7M | 155 | Under 3 |
| Roofing and gutters | Not scored | Not scored | 4 | 3.9 | $7.1M | 84 | 3 |
| Veterinarians | Not scored | Not scored | 4 | 3.9 | $2.2M | 83 | 4 |
| Barbershops | Not scored | Not scored | 3 | 2.9 | $3.5M | 186 | Under 3 |
| Landscaping and lawn care | Not scored | Not scored | 3 | 2.9 | $4.3M | 147 | 13 |
| Laundromats | Not scored | Not scored | 3 | 2.9 | $6.9M | 55 | Under 3 |
| Primary care and pediatrics | Not scored | Not scored | 3 | 2.9 | $5M | 279 | Under 3 |
| Tire shops | Not scored | Not scored | 3 | 2.9 | $4.3M | 173 | Under 3 |
| Dry cleaners | Not scored | Not scored | 1 | 1.0 | $20.6M | Too few | Under 3 |
| House cleaning | Not scored | Not scored | 1 | 1.0 | $12.9M | Too few | 3 |
| Pet grooming and boarding | Not scored | Not scored | 1 | 1.0 | $9M | Too few | 3 |
| Pet stores | Not scored | Not scored | 1 | 1.0 | $9M | Too few | Under 3 |
| Property management | Not scored | Not scored | 1 | 1.0 | Index only | Too few | Under 3 |
| Yoga, Pilates and fitness studios | Not scored | Not scored | 1 | 1.0 | $9.4M | Too few | 3 |
| Home inspectors | Not scored | Not scored | 0 | 0.0 | None listed | None listed | Under 3 |
| Mortgage brokers and lenders | Not scored | Not scored | 0 | 0.0 | None listed | None listed | Under 3 |
| Oil change and quick lube | Not scored | Not scored | 0 | 0.0 | None listed | None listed | Under 3 |
| Pest control | Not scored | Not scored | 0 | 0.0 | None listed | None listed | Under 3 |
| Urgent care and walk-in clinics | Not scored | Not scored | 0 | 0.0 | None listed | None listed | Under 3 |
Household spending in Plymouth County
What households here spend in a year on each line, in total and per household, with the index against the U.S. average (100).
| Spending line | A year, all households | Per household | Index vs. U.S. (100) |
|---|---|---|---|
| Vehicle maintenance and repairs | $13M | $1,258 | 131 |
| Gasoline and other fuels | $32.7M | $3,174 | 122 |
| Food away from home | $41.2M | $4,000 | 98 |
| Groceries | $63.7M | $6,175 | 98 |
| Personal care products and services | $10.5M | $1,018 | 101 |
| Child care and other personal services | $4.3M | $416 | 72 |
| Memberships, classes and admissions | $9.4M | $912 | 93 |
| Medical and dental services | $14.9M | $1,447 | 112 |
| Pets | $9M | $872 | 96 |
| Clothing, shoes and related services | $20.6M | $2,002 | 97 |
| Vehicle insurance | $19.8M | $1,921 | 98 |
| Home repairs, maintenance and insurance | $28.5M | $2,764 | 92 |
| Lawn care, cleaning and other household services | $12.9M | $1,254 | 89 |
| Rent and homeowner costs | $147.5M | $14,301 | 86 |
Household spending is estimated from the incomes of the households in each neighborhood, using what households at each income spent nationally in 2024, adjusted for the region. It counts what residents spend, wherever they spend it.
Population and households in Plymouth County
- Population, 2025 estimate
- 25,6970.0% since 2020
- Households
- 10,313
- Median age
- 41.9
- Homes lived in by their owners
- 74%
- Vehicles per household
- 2.2
- Land area
- 863 sq. mi.
- People per square mile
- 30
- Median household income
- $83,251+23.7% vs. 2015–2019, before inflation
- Average household income
- $101,116
- Median home value
- $228,900
- Jobs located here
- 12,334
- Daytime population
- 23,763Residents who don’t work, plus everyone whose job is here
Looking at a specific site in Plymouth County?
These figures cover the whole county. A site report draws rings around one address and counts what’s inside them: households, spending, jobs, and the competitors on map listings by name and distance, for any of the 56 business types.
Or open the report at the center of Plymouth County. Signed out, you see a blurred preview; on an account, each report is one action.
Free10 actions over 3 days, no cardRelated markets
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- O’Brien County, IA14,126 people
- Ida County, IA6,911 people
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- Buena Vista County, IA20,753 people
Questions
How fast is Plymouth County, IA growing?
Population estimates put Plymouth County at 25,697 people in 2025, unchanged since 2020, against +3.1% for the U.S. It has 10,313 households. Median household income rose 23.7% from the 2015–2019 survey, before inflation.
How much do households in Plymouth County, IA spend?
Households in Plymouth County spend about $147.5M a year on rent and homeowner costs, $63.7M on groceries and $41.2M on food away from home. Set against the U.S., households in Plymouth County spend the most on vehicle maintenance and repairs (an index of 131, where 100 is the U.S. average) and the least on child care and other personal services (72).
Which business types have the highest market scores in Plymouth County, IA?
The highest Groundwork market scores in Plymouth County are for dentists and orthodontists (75), fast food and sandwich shops (72) and grocery and convenience stores (69). Plymouth County ranks #141 of 1,886 scored counties for dentists and orthodontists.
How does Plymouth County, IA compare with the U.S.?
The median household income in Plymouth County is $83,251 a year, 3% above the U.S. median of $80,734. The population held level from 2020 to 2025, against +3.1% for the U.S. The median home value is $228,900, against $332,700 for the U.S. For its number of households, Plymouth County has the most map listings, relative to the U.S., for car washes and detailers (2.8 times the U.S. rate) and the fewest for real estate businesses (62% below the U.S. rate).
What is the Groundwork market score?
The Groundwork market score runs from 0 to 100 and compares a market with others of its kind for one business type: states with states, metro areas with metro areas, small-town markets and counties with their own. It weighs household spending per competitor (35%), households per business with payroll (25%), population growth (20%) and spending power (20%), each ranked against those peers. A higher score means that, taken together, the market has more household spending and more households for each business already there, faster population growth and more spending per household than similar markets. It describes a market, not any one site or deal. 33 of the 56 business types have a score in Plymouth County, each ranked against other counties.
How can I see the market around a specific site?
Run a Groundwork site report on an address in Plymouth County. It maps the competitors on map listings near the site and sizes the households and spending within the distance you choose. New accounts get 10 actions over 3 days, no card.
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Screening a site or an acquisition in Plymouth County?
A site report maps the competitors on map listings near an address and sizes the households and spending around it.
The button opens the report at the center of Plymouth County. Signed out, you see a blurred preview; on an account, each report is one action.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.
Figures are estimates for research only. Not investment or real estate advice.